Grip tensor for antisliding chains



April 9, 1929. A. G. HARTUNG 1,708,620

GRIPTENSOR FOR ANTISLIDING CHAIN S Filed Jan. 18, 1928 l /da/berfa Gun 7 2mb Ha "z ur/g INVENTOR 1L ATTORNEY.

Patented Apr. 9, 1929.

ADALBERTO GUALTERIO HARTUNG, 0Z5 BUENOS AIBES, ARGENTINA,

GRIP TENSOR FOR ANTISLIIDING CHAIN S.-

Application filed January 18, M28. Serial No. 247,554,

The present invention refers to a griptensor for coupling ends and Stretching the chains applied onpneumatic tyres of motorcars and other vehicles. wi h the purpose of avoiding the sliding and facilitate its travelling through muddy, boggy and sandy places.

As will further be seen, the grip-tensor, which is the object of the present application, consists essentially of a lever arranged as the sheath of a common penknife and retained at the end of a casing in which has been arranged a cotter or gri stop, destined to retain said lever.

By these means, an easy and rapid grip and opening is obtained.

- F or the better understanding of this desc iption I accompany drawings, in which:

Fig. I, is the elevation of a common tyre in which an anti-sliding chain has been applied,

provided of a griptensor manufactured, ac-

cording to this invention.

V *ig. 11, represents an open griptensor.

Fig. III, shows same grip-tensor, closed; Fig. IV, is a out according to line AB of Fig. 3, but with the lever opened, which is also projected closed.

i In said drawings, 1 is the common chain,

the end'of'which, a is coupled to the casing 2, of the griptensor, while the free end Z) is in combinationwith closing lever 3, passing it through same, as represented in Fig. II, for carrying it toth'e position of Fig. 111, which is the positon of the grip.

As can be seen, the casing presents a slot 4,

which in combination with adjusted part 5,

of the lever, forms the hook where the free link bis imprisoned. r

The cotter 6, is retained in the casing, which presents the broadened part 7, actuated by means of the expansive spring 8, that actuates between the casing and the upper enlargement 9. V f

In combination with said cotter 6, a slot 10 has been provided in the lever, whose edges 11 and 12, have been sharpened to actuate as a wedge when closing the lever and causesthe v cotter to. retire, untll the perforation of larger diameter provided at the bottom of the cotter '10, presents itself before it.

This has for its object, to obtain a tight grip, and easy to free, which grip is efiected by the fact that it penetrates the broadened part 7,'in the broadened perforation of the slot 10, which avoids opening the lever without previously pressing the enlargement or button 9.

The grip is to be so arranged, that the mentioned button 9, remains towards the axis of the wheel to avoid any prominence of the ground pressing it, and cause the aperture of the grip to become ineltective.

For. closing the chain, the free link B is passed through the link 5, as can be seen in Jig. I. e T

In this disposition, the lever rotates, and by said novement the tension of the chain is originated, because the end of said link is caused to reach the point in which the slot at is.

lVhen folding the lever into the casing, the lifting and introduction of the cotter in the aperture of the lever, produces the grip.

For opening it, with only pressing the button 9, so as to remove the broadened part and anchor the slot 10, presenting and passing the smaller bolt 6, whose diameter was established according to the passing of the slot.

As has been said, a conical surface fraction h been formed between the broadened part 7 and the bolt 6 which in combination with side end parts, with sharp edges, allows the cotter to be removed and obtain the grip to be automatically effected when pressing the lever.

Having now described and specified the nature of my invention and the manner in which is to be performed, what I claim as my exclusive property and invention, is:

1. Linked tire-chain connecting means, comprising two members pivotally connected together at one end and adapted to close oneover the other, and having recesses cooperating in closed position, to receive opposite end-links of the chain.

2. Linked tire-chain connecting means, comprising two members pivotally connected together at one end and adapted to close one over the other, and having recesses cooperating in closed position, to receive opposite end links of the chain, and means for holding the members in closed position.

7 3. Linked tire-chain connecting means comprising two pivot-ally connected members, adapted to close one over the other, and having recesses cooperating in closed position,

to receive an end link of the chain, the one connecting member having further a slot and the other connecting member having holes adapted to align coaxially with the bottom of the said slot, and a spring pressed cotter bolt having a shoulder to engage one side of the outer member and being slidable axially I within the said holes and the bottom of the said slot, for looking said members in closed' holes of different size in the mid-portions of its two sides; a blade member having a recess 7 Y near its pivotal point to cooperate with the said slot for holding the end link of the chain, and having further in its mid portion an inclined slot with an enlarged vend portion; a

- spring pressed cotter bolt having an enlarged portion and a reduced portion 'slidable in the two said coaxial holes respectively, thereduced portion of the bolt corresponding 'to thevnarrower part of the said inclined slot,

and the enlarged portion of the bolt corresponding to the enlarged end portion of the inclined slot.

5. Ina pivotally linked tire-chain connecting means, a U-shaped sheath member, having a slot near its pivotal point and two coaxial holes of different size in the mid portions of its two sides a blade member having a recess near 'itspivota'l point, to cooperate Withthe said slot for holding the end link of thechain and having fu'rtherin its mid portion, an inclined slot with a narrowerentrance partand an enlargedend'portion, the one wall of the slot being beveled; a spring pressed cotter bolt having an enlarged shaft portion and a reducedfshaft portion, slidable in the two aforesaid" coaxial holes respectively, and a conical midfpo rtion' to be engaged by the beveled wall of the said inclined slot for shifting the bolt automatically into the position for locking the blade member Within the sheath member.

ADALBERTO CUALTERIO HARTUNG. 

